Spoilers for “The Robot Revolution.” The start of any season of Doctor Who is important, doubly so when there’s a new co-star to introduce. “The Robot Revolution” has to get us to fall in love with ...

San Francisco’s self-driving Waymos become community bulletin boards, a sign that the human touch is not dead.

Participants will learn how recycling works and see how robots, magnets and hand-sorting are used to process materials.